Respuesta :

Answer:

See explanation

Step-by-step explanation:

Assuming the given polynomial is

[tex]3u + 12 {u}^{2} - 7 {u}^{3} + 1[/tex]

We then rewrite in decreasing powers of u, to get:

[tex] - 7 {u}^{3} + 12 {u}^{2} + 3u + 1[/tex]

The leading term is

[tex] - 7 {u}^{3} [/tex]

The leading coefficient is the coefficient of the leading term.

The leading coefficient is -7.